Passenger bus



FIG. 1 is a top, front, and right side perspective view of a passenger bus showing our new design;

FIG. 2 is a top, front, and left side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a rear elevation view thereof; and,

FIG. 8 is a rear elevation view of a passenger bus showing a second embodiment of our new design. All other views are substantially the same as shown in FIGS. 1-6 of the first embodiment.

The environmental structures shown in broken lines throughout the drawings are for illustrative purposes only and form no part of the claimed design. 

We claim the ornamental design for a passenger bus, as shown and described. 